She used 2.67 ounces of ice cream in the shake. (2/3) * 4 = 8/3 which is equal to approximately 2.67 ounces.
Check the graph and observe where x = 2.
And check where it cuts across the line of the graph.
If you trace the graph carefully, when x = 2, y = -2
So the value of the function is -2.
I hope this helps.
ANSWER

EXPLANATION
The given binomial expansion is:

Compare this to

we have a=2x , b=-3y and n=10
We want to find the coefficient of the term

This implies that, r=5.
The terms in the expansion can be obtained using

We substitute the given values to obtain;



Hence the coefficient is;

Answer:
The equation is

and the graph looks like this